2009 AUDI Q7 brake light

llffl!I Trailer towing
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& W ARN ING (continued )
• The Gros s Vehicle Weight Rating for your Audi 07 vehicle ,
found on the safety compliance l abel on the driver's side B -pillar ,
must never be ex ceeded under any cir cumstances . E xceeding the
Gross Vehi cle Weight Rating of your vehicle is likely to damage
your vehicle , and such damage w ill not be covered by your Limited
New Vehicle Warranty. Exceeding the Gro ss Vehicle Weight Rating
will also change the performan ce and handling characteristics of
your vehicle , which could cause a crash resulting in serious injury
or death .
• The Gros s Vehicle Weight Rating for your Audi 0 7 would be
e xc eeded if your veh icle is simultaneously equipped with
Panoramic sliding sunroof ; third -row seating ; trailer towing equip ­
ment (factory or dealer -installed) , and running boards (dealer ­
installedl. UNDER NO CIRCUMSTANCES MAY ALL SUCH ITEMS BE
INSTALLED ON THE SAME VEHICLE .
a
Operating instructions
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MAX 6.9"
MAX 175mm
Trailer towing weights
Fi g. 2 76 P erm itted ball
po sition of the trailer
hitch
With a factory-installed trai ler hitch, the maximum permissible
trai ler weight is 6,615 lbs (3,000 kg). The maximum permissible
unbraked trailer weight is 1,650 lbs (750 kgl. With an
aftermarket
tr ailer h itch , the maxi mum pe rm iss ib le tra iler weigh t is 5,51 2 lb s (2,500
kg). These specifications apply when driv ing on roads having
an in cli ne of less t han 12% .
Permissible tongue load
Fo r best v ehicle ha ndling under th es e changed con ditio ns, a dju st
the trai ler load so that the tongue load is at the maximum allowable
or s lightly lower. Y ou ca n ge t an ap proxi mati on of the tong ue load
with a bathroom sca le or you can measure the load at a trucking
company or weig hing s tati on.
Wtih a
factory -installed trailer hi tch, the max imum perm issib le load
on the ball hitch may not exceed 66 2 lbs (300 kg) . With an
after­
market
t ra iler hitc h, the max imum pe rmi ssible loa d on the ball h itch
may not exceed 55 1 lbs (250 kg). It is recommended to use the
m aximum p ermi ssi ble l oad.
Trailer load distribution B e sure the load in the trai ler is he ld securel y in place to prevent it
from shifting forward, backward or sideways.
Never allow a passenger to ride in a trailer=> & in "D riving ins truc­
tions" on page 307.
Ball mount
T he trai ler hitch may only be used with suitab le ball mount and ball
=> fig. 276 . In sta llati on of t he hitch ball must be ca rr ie d o ut i n a ccor ­
dance with the manufacturer's instructions. At the height dimen­
s io n of 1 .5 in (38 .5 mm) a tole ran ce o f+/- 0 .5 in (12 .7 mm) is pe rmis ­
sib le.
Engine cooling system
T owing a trai ler makes the engine work harder. It is important that
th e c ooli ng system 's per forman ce is u p to the a ddi tiona l loa d. Ma ke
sure that the coo ling s ystem has enough f luid.
Tire pressure
When towing a trailer, inflate the tires of your vehic le to the cold tire
p re ssure l is ted unde r "Full load" on th e tire press ure l abe l. On USA
vehic les, the tire pressure label is located on the driver's side 8 -

pillar. On Canada vehicles, the tire pressure label is located either on
t he driver's side 8 -pillar or inside the fuel fil ler flap. Inflate trailer
tires to trailer and tire manufacturers' specifications.
L ight s
The head light settings should be checked with the trailer attached
before driving off . Check to make sure both vehicle and trai ler lights
are working properly.
Sa fety c hain s
Be sure trailer safety chains are properly connected from the trailer
to the hitch on the vehicle . Leave enough slack in the chains to
permit turning corners. When you insta ll safety chains, make sure
they will not drag on the road when you are driving .
The chains should cross under the tra iler tongue to prevent it from
dropping in case of separation from the hitch.
0 Note
If you are going to tow a traile r, you must activate the trailer opera ­
tion mode =>
page 211, "Towing a trailer" .
Driving instructions
Driving with a trailer always requires extra care and
consideration.
To obtain the best possible handling of vehicle and trailer,
please note the fo llow ing:
- Do not tow a loaded trailer when your car i tse lf is not
loaded .
- Be especia lly careful when passing other vehicles .
- Observe speed l imits.
- Do not drive at the maximum permiss ible speed .
Controls and equip­
ment Safety first Vehicle operation
Tr
aile r t owing
Always apply brakes early .
- Monitor the temperature gauge .
Weigh t dis tr ibution
Towing a loaded trailer wi th an empty car results in a highly
unstable dis tribution of weight . If this cannot be avoided , drive at
very low speeds only to avoid the risk of losing steering control.
A "balanced" rig is easier to operate and control. This means that
the tow vehicle should be loaded to the extent possible and permis ­
sib le, while keeping the trailer as light as possib le under the circum ­
stances . Whenever possible, transfer some cargo to the luggage
compartment of the tow vehicle whi le observing tongue load
requirements and vehicle loading considerations .
Speed
The higher th e speed, the more difficu lt it becomes for the driver to
control the rig . Do not drive at t he maximum pe rmissible speed.
Reduce your speed even more
if load, weather or wind conditions
a re unfavorable -particularly when going downhil l.
Reduce vehicle speed
i mmedi ate ly if the trailer shows the slightest
sign of swaying.
Do not tr y to s top the swaying by accelerating .
Observe speed limits . In some areas, speeds for vehicles towing
trailers are lower than for regular vehicles .
Always apply brakes early. When driving downhill, shift into a lower gear to use the engine braking effect to slow the vehicle. Use of the
brakes alone can cause them to overheat and fa il.
Coo lant t emperatu re
The coolant temperature gauge=> page 13 must be obse rved care ­
ful ly. If the need le moves close to the upper end of the sca le , reduce
speed immediately and/or turn off the air conditioner .
If the coolant temperature warning light in the instrument cluster
starts f lashing
- f- , pul l off the road, stop and let the engine idle for
about two minutes t o prevent heat build -up.
Vehicle care Do-it-yourself service Technical data

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[ i ] Tips
Keep si licone sprays off the windshie ld to avoid wiper smear in
rain. •
Cast (light) alloy wheels
Cast (light) alloy wheels require special care.
-Wash the wheels with a sponge or hose brush every
o ther week.
- For deep clean ing afterwards, use only a dedicated acid­
free cast alloy whee l cleaner.
Rub a coat of liquid wax onto the rims every t hree month .
Be sure to reach and treat all parts of the rim.
To preserve the decorative appearance of the cast alloy wheels,
some special care is necessary. In add ition to road dirt and salt,
brake dust is also corrosive . If left on for too long, brake dust can
cause pitting.
Use on ly special
acid -free cleaners formu lated for a lloy rims . Safe
produc ts are available at your authorized Audi dealer. Never leave
the cleaner on the rims longer than specified on the label. If not rinsed off promptly, the acid contained in some cleaners can attack
the threads on the wheel bolts .
Never use abrasive or metal po lishing c leaning agents. If the protec ­
t ive coating has been chipped, e.g . by kicked up road dirt, touch it
up as soon as possible .
& WARNING
• Moisture a nd i ce on b rake s m ay affect brak ing effi cienc y
=> page 291 , "General information ". Te st the brake s carefully ea ch
t ime you wa sh the vehi cle .
& W ARN IN G (c ontinued )
• Always read and h eed all WARNINGS and other inform ation
=> p age 31 2. •
Body cavity sealing
The b ody cavity sealing does not need to b e checked.
All body cavities which could be affected by corrosion have been
thoroughly protected at the factory .
T his seal ing does not require any inspection or add it ional trea t­
ment. If any wax should seep out of the cavity wh en the ambient
t emperature is h igh, i t ca n be removed with a p lastic scrape r and a
suitable solvent.
& WARNING
S olvent s can be dangerous .
• Ben zine is flammable and toxic . If you use benz ine for re moving
the wax , keep sparks , flame and l ighted cigarettes away . Never
dump benzine on th e ground , into open streams or down sewage
dr ains.
• Be sure to ob serve all safety and environmental regulat ion s.
Follow all instru ctions on the cont ainer .
• Alway s r ead and heed all WARNINGS and other info rmation
=> page 312 . •
Chassis
Have the undercoating checked for damage from time to
time.
The lower body shell of your Audi is also thoroughly protected
against corrosion .

_____________________________________________ C_h_ e_ c _ k_in -= g_a _ n_d _ f_il _li _n ..;::g =-- ____.•
& WA RNING ! continued )
• The auxiliary ele ctric fan is temperature controlled and can
s w itch on suddenly even wh en t he engine is not runn ing .
• The auxiliary radiator fan swit ches on automatic ally when the
engin e coolant rea che s a cer tain temperature and will con tinue to
run until the coolant temperature drop s. •
Brake f luid
Checking brake fluid level
The brake fluid level c an be checke d with a quick gl ance .
Fig. 288 E ngine
comp artm ent: B ra ke
flui d rese rvoir
Be fore you check a nything in th e en g in e co mpart ment,
always read and heed all WARNINGS=> & in "Working in
t h e eng ine compartment" on
page 331.
- Read the brake fluid l eve l from the brake fluid reservoir
=> fig. 288. The brake flu id level mus t be between the
"MIN" and "MAX" markings.
The brake fluid reservoir is locate d at the rear partition of the engine
compartment on the left side=>
page 332.
The fluid level may drop slightly after some time due to the auto ­
ma tic adjustment of the brake pads. This is not cause for alarm .
If the brake fluid leve l falls
considerably below the "MIN" mark , the
brake warning/indicator light (U.S. models:
BRAKE , Canadian models:
«D> l will come on=>
page 23 and=> page 32 . Do not continue to
operate the vehicle. The complete brake system should be thor ­
oughly checked
by an author ized Audi dealer or qua lif ied workshop
and the cause corrected . If th e brake fluid level is too low, the brake
warning/indicator light w ill illumi nate. Contact an authorized Audi
dea ler
immedi ately .
[ i ] Tips
The brake fluid reservoir is located underneath the cover .•
Changing brake fluid
Have the brake fluid changed by an experience d techni ­
cian.
Brak e fluid absorbs mois ture from the air. If the wate r conten t in the
brake fluid is too high, corrosion in the brake sys tem may res ult
after a period of time . The boiling point of the brake fluid will also
decrease conside rably and decrease braking performance .
Therefore , the brake fluid mus t be changed
every two year s. Always
use new brake fluid which conforms to Federal Motor Vehicle S tan ­
da rd "FMVSS 116 DOT 4".
The brake fluid reservoir can be difficul t to reach, therefore , we
recommend that y ou have the brake fluid changed by your autho ­
rized
Audi deal er. Your dealer has the correct tools, the right brake
fluid and the know -how to do this for you .
& WARNING
• Brak e fluid is poi sonou s. It mu st be stored only in the clo sed
o riginal conta iner out of the rea ch of children! ..,.
Vehicle care I I irechnical data

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& WARN ING (c o ntinued )
• Brake failure can re sult from old or inappr opriate brake fluid .
Ob serve the se precautio ns:
- Use only brake fluid that meets SAE specific ation J 1703 and
c onform s to Fed era l Moto r Vehi cle St anda rd 116. Al ways c heck
with your authori zed Audi dealer to make sure you are u sin g
the corre ct brake fluid. The correct typ e of brake fluid i s also
indicated o n the brake fluid reser vo ir .
- The br ake flu id mu st be ne w. Heavy u se of the brake s can
c au se a vapor lock if the brake fluid i s left in the s ystem too
long. Thi s can seriou sly affect the effi cien cy of the brake s as
w ell a s your safet y. Thi s could re sult in an acci dent .
0 Note
Brake fluid will damage the paint of your vehicle .
For the sake of the environment
Because of the problem of proper disposal of brake fluid as well as
the special too ls required and the necessa ry expertise, we recom­
mend that you have the brake fluid changed by your authorized Audi
dea ler .•
Battery
General information
Under normal operating condi tions, the battery in your Audi does
not need any maintenance. With
high outside temperatures or long
daily drives we recommend that you have the e lectrolyte level
checked by an au thorized Audi dealer or qualified workshop . The
e lectrolyte level should also be ch ecked each time the battery is
charged ~
page 344.
Have the battery checked when you take your vehicle in for service .
Yo u are well advised to replace a battery that is o lder than 5 years .
With certain types of airbag dep loyment, the battery is discon ­
nected from the vehicle electrical system for safety reasons~
& in
"Repair, care and disposal of the airbags" on
page 255.
Disconnecti ng th e batt ery termin als
Some vehicle functions (power window regulators , for example) are
lost if the battery termina ls are disconnected. These functions have
to be relearned after the battery terminals are connected again . To
prevent this, the battery should only be disconnected from the
vehic le electrical sys tem when abso lutely necessary for repairs .
Vehicles not driven for long per iods
If you do not drive your vehicle ove r a period of several days or
weeks, electrical components are gradually cut back or switched off .
T his reduces energy consumption and maintains starting capab ility
over a longer period
~ page 295 .
Take i nto consideration that whe n you u nlock your vehicle, some
convenience functions, such as the master key remote function or
powe r seat adjustme nt, may not be ava ilable. The convenience
functions will be available again when you turn on the ignition and
start the engine .
Wint er op erati on
Duri ng the winter mont hs, batte ry capacity tends to decrease as
temperatures drop . This is because more power is also consumed
whi le star tin g, and the headlights, rear window defogger, etc ., are
used more often.
Avoid unnecessary power consumption, particular ly in city traffic or
when trave li n g o nly short dis tances . Let your authorized Audi dea ler
check the capacity of the vehicle battery before winter sets in
~ page 344. A we ll cha rged battery w ill not only preven t starting
problems when the weather is cold, but will also last longer . ..,_